High Chrome Cast Grinding Balls

NAME BRAND CHEMICAL ELEMENTS C Si Mn Cr Mo Cu Ni P S
HI-CR CASTING BALLS ZQCr26 2.0-2.8 ≤ 1.0 0.5-1.5 22-28 0-1.0 0-2.0 0-1.5 ≤ 0.10 ≤ 0.06
HI-CR CASTING BALLS ZQCr20 2.0-2.8 ≤ 1.0 0.5-1.5 18-22 0-2.5 0-1.2 0-1.5 ≤ 0.10 ≤ 0.06
HI-CR CASTING BALLS ZQCr15 2.5-3.2 ≤ 1.0 0.5-1.5 12-17 0-3.0 0-1.0 0-1.5 ≤ 0.10 ≤ 0.06
ME-CRCASTINGBALLS ZQCr8 2.1-3.2 0.5-2.2 0.5-1.5 6-10 0-1.0 0-0.8 0-1.5 ≤ 0.10 ≤ 0.06
LOW-CR CASTING BALLS ZQCr2 2.2-3.6 ≤ 1.2 0.5-1.5 1.5-3.5 0-1.0 0-0.8 - ≤ 0.10 ≤ 0.10

MECHANICAL:

NAME BRAND SURFACE HARDNESS ENDURANCE IMPACT TEST(TIMES)
QUENCHED UNQUENCHED
HI-CR CASTING BALLS ZQCr26 ≥ 56 ≥ 45 ≥ 8000
HI-CR CASTING BALLS ZQCr20 ≥ 56 ≥ 45 ≥ 8000
HI-CR CASTING BALLS ZQCr15 ≥ 56 ≥ 49 ≥ 8000
ME-CRCASTINGBALLS ZQCr8 - ≥ 48 ≥ 8000
LOW-CR CASTING BALLS ZQCr2 - ≥ 45 ≥ 8000

SIZE OF CASTING BALLS:

ITEMS SIZES
φ 25 φ 30 φ 40 φ 50 φ 60 φ 70 φ 80 φ 90 φ 100 φ 110 φ 120 φ 130
TOLERANCE +1.0
-0.5 +2.0
-1.0 +3.0
-1.0 +3.5
-1.5
DIFFERENCE BETWEEN MAX DIA AND MIN DIA ≤ 1.0 ≤ 2.0 ≤ 3.0 ≤ 4.0